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Complex Dynamics in a PEM Fuel Cell
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DOI：10.1149/1.3210561.png)
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摘要
En 中文
Oscillatory kinetics in a polymer electrolyte membrane fuel cell (PEMFC) was studied at different applied currents and fluxes in the anodic compartment. The system consisted of a Pt/C cathode fed with oxygen and a PtRu(1:1)/C anode fed with H-2 mixed with 108 ppm of CO, and was operated at 30 degrees C. Many different states including periodic and non-periodic series were observed as a function of the applied current (j) and the H-2/CO flux. In general, aperiodic/chaotic states were favored at high currents and low flux. This allowed us to discuss the connection between the observed dynamics and the reaction mechanism.
Keyword:
POTENTIAL OSCILLATIONS
ELECTROCHEMICAL OXIDATION
CO OXIDATION
HYDROGEN
H-2
ELECTROOXIDATION
POLARIZATION
TRANSITIONS
ELECTRODES
ACTIVATION
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